Silverthorn Resort
Active WDID 5R45I010979 Redding, Shasta County Region 5R · Central Valley (Redding)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Redding, Shasta County
- Region 5R · Central Valley (Redding) · Location · Statewide map
- Receiving water
- Shasta Lake (as reported by the facility)
- Evidence: candidate, awaiting review Details
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- None
- Monitoring results Evidence: facility-reported
- 308 distinct results, 10 reporting years (2015 to 2024)
- Most recent sample Dec 26, 2024 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 2 inspections · 8 violation records · 9 enforcement actions
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 40.716314, -122.242037
- Precision
- 6 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 16250 Silvertorn 16250 Silverthorn Road, Redding 96003
- Regional Water Board
- 5R — Central Valley (Redding)
HUC12 watershed Evidence: spatial
- Dry Creek HUC12 180201510303
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Active
- Operator
- Silverthorn Resort Associates
- Primary industry (SIC)
- 4493-Marinas
- Application ID
- 197554
- NOI processed
- Apr 08, 1994
- Last certified
- Jun 18, 2015
- Facility size
- 25 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 197554 | Industrial | Active | Apr 08, 1994 | — | Jun 18, 2015 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Shasta Lake
- Discharges directly / indirectly
- N / N (as answered in the permit application)
Evidence: not confirmed Evidence: candidate, awaiting review Awaiting review
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Why it is not confirmed (1)
- C3 facility HUC12 not corroborated
1 official waterbody shares this name; none is assigned without review.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
No 2026 Integrated Report waterbody lies within the proximity threshold of the reported location.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
308 distinct measurements across 7 parameters, most recent sample Dec 26, 2024.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2024 | 14 | 7 | 0 | Dec 26, 2024 | Dec 26, 2024 |
| 2023 | 28 | 7 | 0 | Dec 17, 2023 | Jan 31, 2024 |
| 2022 | 28 | 7 | 0 | Dec 08, 2022 | Apr 06, 2023 |
| 2021 | 28 | 7 | 0 | Dec 21, 2021 | Apr 13, 2022 |
| 2020 | 14 | 7 | 0 | Jan 06, 2021 | Jan 06, 2021 |
| 2019 | 28 | 7 | 0 | Jan 16, 2020 | Mar 24, 2020 |
| 2018 | 28 | 7 | 0 | Jan 15, 2019 | Mar 20, 2019 |
| 2017 | 28 | 7 | 0 | Jan 24, 2018 | Mar 21, 2018 |
| 2016 | 28 | 7 | 0 | Oct 24, 2016 | Feb 16, 2017 |
| 2015 | 84 | 7 | 0 | Nov 09, 2015 | Feb 19, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Aluminum, Total | mg/L | 44 | 0 | Nov 09, 2015 | Dec 26, 2024 | Results |
| Iron, Total | mg/L | 44 | 0 | Nov 09, 2015 | Dec 26, 2024 | Results |
| Lead, Total | mg/L | 44 | 9 | Nov 09, 2015 | Dec 26, 2024 | Results |
| Oil and Grease | mg/L | 44 | 40 | Nov 09, 2015 | Dec 26, 2024 | Results |
| pH | SU | 44 | 0 | Nov 09, 2015 | Dec 26, 2024 | Results |
| Total Suspended Solids (TSS) | mg/L | 44 | 19 | Nov 09, 2015 | Dec 26, 2024 | Results |
| Zinc, Total | mg/L | 44 | 0 | Nov 09, 2015 | Dec 26, 2024 | Results |
All results (308 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Dec 26, 2024 | Aluminum, Total | .0695 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Aluminum, Total | .0687 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Iron, Total | .0725 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Iron, Total | .077 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Lead, Total | .00013 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Lead, Total | .00012 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Oil and Grease | 9.6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1321241 | |
| Dec 26, 2024 | Oil and Grease | 1.6 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1321241 | |
| Dec 26, 2024 | pH | 7.1 | SU | Effluent | Qualifying Storm Event | pH_Field | 1321241 | |
| Dec 26, 2024 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1321241 | |
| Dec 26, 2024 | Total Suspended Solids (TSS) | 1.3 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1321241 | |
| Dec 26, 2024 | Total Suspended Solids (TSS) | 1.5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1321241 | |
| Dec 26, 2024 | Zinc, Total | .0116 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Dec 26, 2024 | Zinc, Total | .0134 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1321241 | |
| Jan 31, 2024 | Aluminum, Total | .102 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Aluminum, Total | .606 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Iron, Total | .105 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Iron, Total | .721 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Lead, Total | .00018 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Lead, Total | .00053 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Oil and Grease | 1.4 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1284341 | |
| Jan 31, 2024 | Oil and Grease | .8 | mg/L | Effluent | Qualifying Storm Event | E1664B | 1284341 | |
| Jan 31, 2024 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1284341 | |
| Jan 31, 2024 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1284341 | |
| Jan 31, 2024 | Total Suspended Solids (TSS) | 14.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1284341 | |
| Jan 31, 2024 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1284341 | |
| Jan 31, 2024 | Zinc, Total | .0052 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Jan 31, 2024 | Zinc, Total | .0073 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1284341 | |
| Dec 17, 2023 | Aluminum, Total | .058 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Aluminum, Total | .155 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Iron, Total | .0553 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Iron, Total | .189 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Lead, Total | .00012 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Lead, Total | .00021 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1277476 | |
| Dec 17, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1277476 | |
| Dec 17, 2023 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | pH_Field | 1277476 | |
| Dec 17, 2023 | pH | 7 | SU | Effluent | Qualifying Storm Event | pH_Field | 1277476 | |
| Dec 17, 2023 | Total Suspended Solids (TSS) | 4.9 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277476 | |
| Dec 17, 2023 | Total Suspended Solids (TSS) | 6.8 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1277476 | |
| Dec 17, 2023 | Zinc, Total | .0049 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Dec 17, 2023 | Zinc, Total | .0047 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1277476 | |
| Apr 06, 2023 | Aluminum, Total | .117 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237857 | |
| Apr 06, 2023 | Aluminum, Total | .209 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237857 | |
| Apr 06, 2023 | Iron, Total | .121 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237857 | |
| Apr 06, 2023 | Iron, Total | .341 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237857 | |
| Apr 06, 2023 | Lead, Total | DNQ .0001 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237857 | |
| Apr 06, 2023 | Lead, Total | DNQ .00021 | mg/L | Effluent | Qualifying Storm Event | E200.8 | 1237857 | |
| Apr 06, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1237857 | |
| Apr 06, 2023 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664B | 1237857 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 8 | 8 Violation · 0 Potential (preliminary) · 0 Dismissed | Jul 01, 1999 – Jul 15, 2016 | Oct 21, 2026 | All violations |
| Enforcement actions | 9 | 9 issued · 0 draft · 0 withdrawn, rescinded or superseded | Oct 26, 1999 – Oct 25, 2016 | Oct 21, 2026 | All actions |
| Inspections | 2 | inspections, not findings | Feb 01, 2000 – Aug 25, 2000 | Oct 21, 2026 | All inspections |
| Annual reports | 11 | certified reports (contents not shown) | 2015 – 2025 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (30 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jul 13, 2026 | Annual reports | 1334535 | Annual report 2025 | — | |
| Jun 24, 2025 | Annual reports | 1293320 | Annual report 2024 | — | |
| Jul 23, 2024 | Annual reports | 1242345 | Annual report 2023 | — | |
| Jul 10, 2023 | Annual reports | 1188302 | Annual report 2022 | — | |
| Jul 08, 2022 | Annual reports | 1111594 | Annual report 2021 | — | |
| Jul 15, 2021 | Annual reports | 1067558 | Annual report 2020 | — | |
| Jul 15, 2020 | Annual reports | 984742 | Annual report 2019 | — | |
| Jul 08, 2019 | Annual reports | 952255 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 937668 | Annual report 2017 | — | |
| Jul 08, 2017 | Annual reports | 876845 | Annual report 2016 | — | |
| Oct 25, 2016 | Enforcement actions | 425321 | SEL (Staff Enforcement Letter) | Historical | |
| Jul 15, 2016 | Violations | 862233 | Deficient Report | Violation | Report |
| Jul 08, 2016 | Annual reports | 840464 | Annual report 2015 | — | |
| Dec 15, 2009 | Enforcement actions | 401038 | NOV (Notice of Violation) | Active | |
| Jul 15, 2009 | Enforcement actions | 369230 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 01, 2009 | Violations | 832194 | Late Report | Violation | Report |
| Jul 01, 2009 | Violations | 840902 | Deficient Report | Violation | Report |
| Jul 28, 2008 | Enforcement actions | 350445 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 01, 2008 | Violations | 779692 | Late Report | Violation | Report |
| Jul 12, 2006 | Enforcement actions | 315114 | NNC (Notice of Non-Compliance) | Historical | |
| Aug 13, 2004 | Enforcement actions | 253534 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 01, 2004 | Violations | 262452 | Deficient Report | Violation | Inspection |
| Aug 14, 2002 | Enforcement actions | 248563 | NNC (Notice of Non-Compliance) | Historical | |
| Jul 01, 2002 | Violations | 220932 | Deficient Report | Violation | Inspection |
| Nov 28, 2000 | Enforcement actions | 230640 | SEL (Staff Enforcement Letter) | Historical |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.